Lifting-jack



P. ZAUGG.

LIFTING JACK.

APPLICATION HLED JUNEy 9. 1919.

, 1,328,609 Patented Jan. 20, 1920 UNITED STATES PATENT OFFICE.

:PHILIP ZAUGG, 0F BLUE CREEK TOVI N SHIP, ADAMS COUNTY, INDIANA.

LIFTING-J ACK.

Specification of Letters Patent.

Patented Jan. 20, 1920.

vApplication filed .Tune 9, 1919. Serial No. 302,955.

To all whom t may concern:

Be it known that I, Prina? ZAUGG, a citizen of the United States, residing at Blue Creek township, in the county of Adams and State of Indiana, have invented certain new and useful Improvements in Lifting-Jacks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to lifting jacks, and the main object of the invention is to improve upon and simplify devices of this character by .providing an improved structure which combines strength, durability, convenience, compactness, and effectiveness, and can be produced at a very low cost.

Other objects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawings, in which Figure 1 is a side elevation illustrating` my improved lifting jack positioned under an automobile axle, preparatory to lifting the same.

Fig. 2 is a view similar to Fig. 1 except that the jack is lifted and is now supporting the axle.

Fig. 3 is a vertical sectional view, the section being taken in a plane intersecting the ,axis of the lifting lever at right angles.

Fig. 4 is an elevation of the jack viewed in the direction of the arrows in Fig. 2, the axle being shown in section, on the jack, the rection being taken along the line 1--4 of Referring to these drawings in detail, in which similar reference characters correspond with similar parts throughout the several views, and in which the automobile axle 5 and wheel 6 are shown merely to illustrate the use and operation ofthe invention,-

The device comprises a standard 7 having feet 8 extending in opposite directions therefrom, and preferably having a foot 9 extending at right angles to the plane of the feet 8. The standard 7 may be formed of wood for the sake of cheapness and lightness, but it is within the scope of this invention to form the same as a hollow casting or to construct the same of any appropriate material. A. bearing 10 is preferably formed integrally with the body 7, and a concaved seat 11 is also formed in the upper surface of the standard, so that journal elements 12 and 13 of my improved lifting lever may be fulcrumed on the upper end of the standard 7, as illustrated, and a bearing-cap or cover 13 is formed with depending' apertured ears 14 through which a bolt 15 extends for securing the bearingcap 13 in position to hold the lifting lever in its bearings.

The lifting lever comprises a supporting element 16 which connects with the journals 12 and 13 by means of crank arms 17. The lifting lever has a handle or arm 18 which stand approximately in diametrically opposed relation to the arms 17. The lifting lever is preferably formed integrally of a single lengthof metal rod and comprises or includes the elements 12, 13, 16, 17 and 18, and humps or shoulders 19 are formed at the junctions of the elements 16 and 17, and these humps or shoulders eliminate danger of the axle, or other object being lifted, from slipping off of the supporting element 16.

By referring to Fig. 2, it will be seen that the handle 18 rests against one of the feet 8 when the device is in its useful position,

and that these elements 8 and 18 coperate with the elements 13 and 17 for holding the supporting element 16 in a position past the axis on which the lever turns. In other words, when the arm 18 is pulled downward from the position shown in Fig. 1, to the position shown in Fig. 2, the supporting element 16 passes over theaxis of the journals 13 and is stopped by the arm 18 and foot 8 after it has passed but a short distance beyond said axis. Therefore, the greater the weight of the object which has been raised, the greater will he the pressure of the handle orarm 18 against the foot 8, and the weight can be lowered only by moving the handle 18 away from the foot 8 so as to cause the supporting element 16 to pass back over the axial line of the journals 13.

It will be seen that by constructing one of the bearings for the journals 13 integrally with the body or standard 7, providing a U-shaped strap which comprises the elements 13 and 14, in connection with the fastening means 15 therefor, the device may be very quickly and easily assembled by persons of ordinary or less than ordinary ability, so that the cost of manufacture of a device of this character is reduced to the minimum.

` a manipulative arm,

ment of my invention very specifically, it is not intended to limit this invention to these exact details of construction and arrangement, but changes may be made within the scope of the inventive idea as implied and claimed herein.

What I claim asy my invention is:

1. In a lifting jack, a standard having a journal-bearing disposed at its top and formed integrally therewith, a lever formed of a single length of rod and comprising journals, a supporting element and a manipulative arm, said supporting element being disposed between said journals, one of said journals being seated in said bearing, a concave Seat being provided in said standard for the other of said journals, and a removable bearing member to retain said other journal in said concave seat, said standard being cooperative with said arm for stopping and holding said supporting element.

2. In a lifting jack, a standard having a journal bearing disposed at its top and formed integrally therewith, said standard having feet extending outward in the axial plane of said journal bearing, a lever formed of a single length of rod and comprising journals, a supporting element and said supporting element being disposedv between said journals, one of said journals being seated in said bearing, a concave seat being provided in said standard for the other of said journals, and a removable bearing-member to retain said other journal in said concave seat, one of said feet being in a position `to arrest movement of said arm and thereby stop said supporting element in its supporting position after it has passed over its axis.

3. In a lifting jack, a body having spaced bearings, and a lever formed integrally of a length of rod and comprising spaced journals and an arm extendingv radially from one of said journals, said lever also comprising two crank-arms and a supporting element between and adjoining the crankarms, said lever also comprising humps at the junctures of said crank-arms with said supporting element, said journals being seated in said bearings, said arm being-operatable vto move said supporting element over and beyond the axis of saidfjournals, said body being coperative with said arm for stopping and holding said supporting element.

In testimony whereof I have hereunto set my hand.

PHILIP ZAUGG. 

